Aluminum foil can be divided into thick foil, single zero foil and double zero foil according to thickness difference.
①Thick foil ("heavygaugefoil"): foil with a thickness of 0.1~0.2mm.
②Single zero foil ("mediumgaugefoil"): foil with a thickness of 0.01mm and less than 0.1mm/.
③Double-zero foil ("lightgaugefoil"): The so-called double-zero foil is a foil with two zeros after the decimal point when its thickness is measured in mm. It is usually an aluminum foil with a thickness less than 0.01, that is, an aluminum foil with a thickness of 0.005~0.009mm. In foreign countries, aluminum foil with a thickness of ≤40ltm is sometimes called "lightgaugefoil", while aluminum foil with a thickness of >40btm is collectively called "heavygaugefoil".
Aluminum foil can be divided into roll aluminum foil and sheet aluminum foil according to its shape. Aluminum foil deep processing wool is mostly supplied in roll form, and sheet aluminum foil is only used in a few handicraft packaging situations.
Aluminum foil can be divided into hard foil, semi-hard foil and soft foil according to the state.
① Hard foil: Aluminum foil that has not been softened (annealed) after rolling, and has no residue on the surface without degreasing. Therefore, rigid foil must be degreased before printing, lamination, and coating. If it is used for forming processing, it can be used directly.
② Semi-hard foil: Aluminum foil whose hardness (or strength) is between hard foil and soft foil, usually used for forming processing.
③Soft foil: Aluminum foil that has been fully annealed and softened after rolling. The material is soft and there is no residual oil on the surface. Most application areas such as packaging, lamination, electrical materials, etc. use flexible foils.
Aluminum foil can be divided into one-sided smooth aluminum foil and two-sided smooth aluminum foil according to the surface condition.
①Single-sided smooth aluminum foil: Double-rolled aluminum foil. After being rolled, one side is bright and the other side is dark. Such aluminum foil is called one-sided smooth aluminum foil. The thickness of one side of plain aluminum foil usually does not exceed 0.025mm.
②Double-sided aluminum foil: A single rolled aluminum foil, with both sides in contact with the rollers. The two sides of the aluminum foil are divided into mirror double-sided aluminum foil and ordinary double-sided aluminum foil due to the different surface roughness of the rollers. The thickness of double-sided aluminum foil is generally not less than 0.01mm.
Aluminum foil can be divided into plain foil, embossed foil, composite foil, coated foil, colored aluminum foil and printed aluminum foil according to the processing state.
① Plain foil: Aluminum foil that has not undergone any other processing after rolling, also called light foil.
②Embossed foil: Aluminum foil with various patterns embossed on the surface.
③ Composite foil: Composite aluminum foil formed by laminating aluminum foil with paper, plastic film, and cardboard.
④Coated foil: Aluminum foil coated with various resins or paints on the surface.
⑤Colored aluminum foil: Aluminum foil coated with a single color on the surface.
⑥Printed aluminum foil: Aluminum foil that forms various patterns, patterns, text or pictures on the surface by printing. It can be one color, up to 12 colors.
